Gurobi 5.0.1 (linux64) logging started Thu Jan 17 23:45:39 2013 Optimize a model with 1000 rows, 26050 columns and 53350 nonzeros Presolve removed 50 rows and 350 columns Presolve time: 0.13s Presolved: 950 rows, 25700 columns, 52850 nonzeros Variable types: 25550 continuous, 150 integer (150 binary) Root relaxation: objective 2.198499e+05, 2218 iterations, 0.10 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 219849.939 0 2 - 219849.939 - - 0s H 0 0 234133.82037 219849.939 6.10% - 0s 0 0 219872.353 0 2 234133.820 219872.353 6.09% - 0s 0 0 219881.304 0 2 234133.820 219881.304 6.09% - 0s 0 0 219884.906 0 2 234133.820 219884.906 6.09% - 0s 0 0 219887.296 0 2 234133.820 219887.296 6.08% - 0s 0 0 219891.996 0 2 234133.820 219891.996 6.08% - 0s 0 0 219893.373 0 2 234133.820 219893.373 6.08% - 0s 0 0 219895.775 0 2 234133.820 219895.775 6.08% - 0s 0 0 219897.743 0 2 234133.820 219897.743 6.08% - 1s 0 0 219897.743 0 2 234133.820 219897.743 6.08% - 1s 0 2 219909.558 0 2 234133.820 219909.558 6.08% - 1s H 27 19 221800.08212 220232.553 0.71% 35.9 2s Cutting planes: Flow cover: 8 Explored 71 nodes (6154 simplex iterations) in 3.04 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.218000821189e+05, best bound 2.218000821189e+05, gap 0.0%